Delete get_xyz_to_uv

manimlib/shaders/inserts/quadratic_bezier_geometry_functions.glsl

@@ -84,29 +84,3 @@ mat3 get_xy_to_uv(vec2 controls[3], float temp_is_linear, out float is_linear){
         controls[0], controls[2], dest[0], dest[1]
     );
 }
-
-
-// Orthogonal matrix to convert to a uv space defined so that
-// b0 goes to [0, 0] and b1 goes to [1, 0]
-mat4 get_xyz_to_uv(vec3 b0, vec3 b1, vec3 unit_normal){
-    mat4 shift = mat4(
-        1, 0, 0, 0,
-        0, 1, 0, 0,
-        0, 0, 1, 0,
-        -b0.x, -b0.y, -b0.z, 1
-    );
-
-    float scale_factor = length(b1 - b0);
-    vec3 I = (b1 - b0) / scale_factor;
-    vec3 K = unit_normal;
-    vec3 J = cross(K, I);
-    // Transpose (hence inverse) of matrix taking
-    // i-hat to I, k-hat to unit_normal, and j-hat to their cross
-    mat4 rotate = mat4(
-        I.x, J.x, K.x, 0.0,
-        I.y, J.y, K.y, 0.0,
-        I.z, J.z, K.z, 0.0,
-        0.0, 0.0, 0.0, 1.0
-    );
-    return (1.0 / scale_factor) * rotate * shift;
-}